<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Sample-1</title>
    <link rel="stylesheet" href="css/index.css">
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>

</head>
<body>
<div class="container-fluid">
    <div class="row" id="top">
    </div>
    <div class="row" id="center">

        <div class="col-md-8 col-md-offset-2" id="content">
            <ul class="nav nav-tabs">
                <li class="active"><a href="#tab1" data-toggle="tab">Tab1</a></li>
                <li><a href="#tab2" data-toggle="tab">Tab2</a></li>
                <li><a href="#tab3" data-toggle="tab">Tab3</a></li>
            </ul>
            <div id="myTabContent" class="tab-content">
                <div class="tab-pane fade in active" id="tab1">
                    <div id="d1"></div>
                    <div id="d2"></div>
                    <div id="d3"></div>
                </div>
                <div class="tab-pane fade" id="tab2">
                    <p>tab2</p>
                </div>
                <div class="tab-pane fade" id="tab3">
                    <p>tab3</p>
                </div>
            </div>
        </div>
        <div class="col-md-2"></div>
    </div>
    <div class="row" id="bottom">
    </div>
</div>
</body>
</html>